Portion of an electronic mouse



FIG. 1 is a first perspective view of a portion of an electronic mouse showing our new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a perspective view of a second embodiment of a portion of an electronic mouse similar to FIGS. 1-3 but differing in that the two buttons have been disclaimed; and,

FIG. 5 is a second perspective view of the portion of an electronic mouse of FIG. 4.

The broken line showing of the remainder of the electronic mouse in FIGS. 1-5 and the two buttons in FIGS. 4 and 5 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of an electronic mouse, as shown and described. 